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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Sperm production
monestrous
spermatogenesis
Culls bulls earlier (2 reasons)
Follical Stimulating in females
2. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
colostrum
scrotal circumference (BSE)
Avg. bull specs
what has to happen for males for copulation to occur
3. Urinary calculi.
hypothalamus and pituitary gland
vulva
Hard
kidney stones also called ________ ___________ can develop in the sigmoid flexure
4. Sperm production
spermatogenesis
feeding a high producing dairy cow
hypothalamus and pituitary gland
mare estrus
5. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
Grading choice
things to check for in a breeding soundness exam (BSE)
reasons for castration
cow estrus cycle
6. 30-38 hours after estrus cycle begins
mare estrus
Jersey Cow
cremaster muscle
sow ovulation
7. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
cow gestation
butterfat
Reasons for gestation length being affected
purpose of Breeding Soundness Exam (BSE) for males
8. Failure to have both testis (gonads) descend
Dairy calves are removed from cow at birth to...
dartos muscle
libido test (BSE)
cryptorchid
9. 30 hours after estrus begins
libido test (BSE)
cow ovulation
Dairy calves are removed from cow at birth to...
semen evaluation (BSE)
10. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
penis proper
scrotal circumference (BSE)
Hormones from both the fetus and the mom.
#1 cost in production
11. Scar tissue plugs up chambers of udder
burdizzo
Hormones from both the fetus and the mom.
femininity of a heifer
mastitis
12. 265-285 days
Dairy Cattle Gestation
1. more cost effective - 2. powdered milk is in excess production
sigmoid flexure
#1 cost in production
13. 30 hours after estrus begins
cow estrus cycle
ewe's estrous cycle
cow ovulation
sow estrus cycle
14. Duct through penis that carries sperm and urine
purpose of Breeding Soundness Exam (BSE) for males
4 major reasons for culling dairy cows
testosterone
urethra
15. 283 days
why does the cow need fat deposits during pregnancy?
Reasons for gestation length being affected
cow gestation
oviducts
16. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
monorchid
epididymis: definition - 3 parts - 4 functions
Sperm survival specs
Where livelihood is in agriculture
17. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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18. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
sigmoid flexure
seasonally polyestrous
rectal palpation (BSE)
eminal vesicles
19. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
Brown Swiss Cow
testis (gonads)
stag
age and castration
20. 16-20 hours
cow estrus
effects of estrogen
Lutinizing Hormone in females
spermatogenesis
21. 147 days
ewe gestation
cervix
testis (gonads)
sow gestation
22. Why does estrus happen before ovulation?
Mares
cow estrus
Dairy Cattle Gestation
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
23. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
effects of estrogen
monestrous
prostaglandin
feeding a high producing dairy cow
24. 265-285 days
Dairy Cattle Gestation
penis proper
Parturition
sow ovulation
25. Help to signal hormone levels which we need both in the brain right next to each other.
mare gestation
6-8 weeks
hypothalamus and pituitary gland
Dairy Cattle Gestation
26. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
purpose of Breeding Soundness Exam (BSE) for males
~1 month
semen evaluation (BSE)
27. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
normal presentation of the fetus
mare ovulation
visual evaluation (BSE)
behavioral signs of estrus
28. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
ewe estrus cycle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Jersey Cow
sperm cell
29. Microscopic - make sure not sterile - very few bulls are actually tested
estrous
semen evaluation (BSE)
libido test (BSE)
Jersey Cow
30. 26 hours after estrus begins
spermatogenesis
mare's estrous cycle
ewe ovulation
Sperm growth rate
31. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
urethra
4 major reasons for culling dairy cows
Dairy Cattle milking schedule
colostrum
32. Milk ~305 days - dry 60 days prior to calving
femininity of a heifer
Dairy Cattle milking schedule
Hormones from both the fetus and the mom.
Sperm survival specs
33. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Holstein Cow
effects of BST
Avg. bull specs
vulva
34. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
mare ovulation
feeding a high producing dairy cow
sow ovulation
Sperm survival specs
35. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Dairy calves are removed from cow at birth to...
Dairy Cattle milking schedule
mare gestation
Reasons for gestation length being affected
36. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
seasonally polyestrous
ewe ovulation
humans: stress level vs sperm
37. When are steers and heifers weaned from bottle feeding?
Grading choice
6-8 weeks
sperm cell
Holstein Cow
38. Provide nourishment for the developing sperm
Dairy Cattle milking schedule
what has to happen for males for copulation to occur
sertoli cells
dartos muscle
39. (male) pushes the testes outward toward the legs for a cool-down off of the body
effects of estrogen
cremaster muscle
testis (gonads)
cow estrus
40. 19-23 (21) days
sow estrus cycle
testosterone
ewe estrus
1. more cost effective - 2. powdered milk is in excess production
41. 10-37 (21) days
mare estrus cycle
hypothalamus and pituitary gland
visual evaluation (BSE)
elastrator
42. Animal which has been castrated after puberty
stag
mare gestation
eminal vesicles
Sperm survival specs
43. (switzerland) 2nd in size and milk production - most muscle -
scrotal circumference (BSE)
Where livelihood is in agriculture
Hard
Brown Swiss Cow
44. Animal which has been castrated after puberty
Lutinizing Hormone in males
sertoli cells
Where livelihood is in agriculture
stag
45. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
uterus
uterus
prostate gland
Blood
46. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
seminiferous tubules
scrotum
sow ovulation
47. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
vagina
functions of progestrone
cowper's gland
oviducts
48. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
dry matter and water
sow gestation
seasonally polyestrous
sertoli cells
49. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
cervix
cowper's gland
seasonally polyestrous
reasons for castration
50. What helps regulate spermatogenesis?
penis and prepuce observation (BSE)
leydid or interstitial cells
what has to happen for males for copulation to occur
testosterone